Process for preparing a cosmetic material

Abstract

A process for preparing a transparent cosmetic material having a moisturizing effect in which lactic acid and casein hydrolysate formation are carried out simultaneously in skim milk by lactic acid bacteria and proteases and, subsequently, sterilization of the lactic acid bacteria and inactivation of the proteolytic enzyme are carried out simultaneously.

What is claimed is: 
     
       1. A process for preparing a cosmetic material comprising the steps of: (a) simultaneously and coextensively carrying out in skim milk the processes of lactic acid formulation by lactic acid bacteria and decomposition of casein by proteases in a temperature range of about 35° to 40° C. for 12 to 48 hours; and   (b) simultaneously carrying out the processes of sterilization of said lactic acid bacteria and inactivation of said proteases at about 75° C. for 30 minutes to produce a cosmetic material.   
     
     
       2. The process of claim 1 in which the solids-non-fat content of said skim milk is 8.5 to 25% by weight. 
     
     
       3. The process of claim 1 wherein said lactic acid bacteria is selected from the group consisting of Lactobacillus burgaricus, Lactobacillus acidophilus, Lactobacillus casein and Streptococcus thermophilus. 
     
     
       4. The process of claim 1 wherein both neutral and acid proteases are used in the decomposition of said casein. 
     
     
       5. The process of claim 4 wherein said neutral protease is selected from the group consisting of bacterial neutral protease, fungus neutral protease, streptomyces protease, papain and tyrpsin. 
     
     
       6. The process of claim 4 wherein said acid protease is fungus acid protease. 
     
     
       7. A process for preparing a cosmetic material consisting of the steps of: (a) simultaneously carrying out in skim milk the processes of lactic acid fermentation by lactic acid bacteria and decomposition of casein by proteases in a temperature range of about 35° to 40° C. for 12 to 48 hours; and   (b) simultaneously carrying out the processes of sterilization of said lactic acid bacteria and inactivation of said proteases at about 75° C. for 30 minutes to produce a cosmetic material.